diff --git a/libc/intrin/closehandle.greg.c b/libc/intrin/closehandle.greg.c
index 17f31261a..dfd278caf 100644
--- a/libc/intrin/closehandle.greg.c
+++ b/libc/intrin/closehandle.greg.c
@@ -32,10 +32,7 @@ __msabi extern typeof(CloseHandle) *const __imp_CloseHandle;
 textwindows bool32 CloseHandle(int64_t hObject) {
   bool32 ok;
   ok = __imp_CloseHandle(hObject);
-  if (!ok) {
-    __winerr();
-    if (weaken(__die)) weaken(__die)();
-  }
+  if (!ok) __winerr();
   NTTRACE("CloseHandle(%ld) → %hhhd% m", hObject, ok);
   return ok;
 }
diff --git a/libc/sock/accept4.c b/libc/sock/accept4.c
index 92b407f6a..168ca77b7 100644
--- a/libc/sock/accept4.c
+++ b/libc/sock/accept4.c
@@ -35,6 +35,7 @@
  *     both the newly created socket and the server one
  * @return client fd which needs close(), or -1 w/ errno
  * @asyncsignalsafe
+ * @restartable (unless SO_RCVTIMEO)
  */
 int accept4(int fd, void *out_addr, uint32_t *inout_addrsize, int flags) {
   int rc;
diff --git a/test/libc/runtime/mprotect_test.c b/test/libc/runtime/mprotect_test.c
index 374be08b9..366bb2cbc 100644
--- a/test/libc/runtime/mprotect_test.c
+++ b/test/libc/runtime/mprotect_test.c
@@ -199,7 +199,7 @@ TEST(mprotect, testFileMap_canChangeToExecWhileOpenInRdwrMode) {
 
 TEST(mprotect, testBadProt_failsEinval) {
   volatile char *p = gc(memalign(PAGESIZE, PAGESIZE));
-  EXPECT_EQ(-1, mprotect(p, 0, -1));
+  EXPECT_EQ(-1, mprotect(p, 9999, -1));
   EXPECT_EQ(EINVAL, errno);
 }
 
diff --git a/test/tool/build/lib/bsu_test.c b/test/tool/build/lib/bsu_test.c
index 8a7593bf3..1e4053527 100644
--- a/test/tool/build/lib/bsu_test.c
+++ b/test/tool/build/lib/bsu_test.c
@@ -199,6 +199,9 @@ void FixupUndefOpTestFlags(char w, int h, uint64_t x, uint64_t y,
   if (y != 0 && y != 1) {
     *flags = SetFlag(*flags, FLAGS_OF, GetFlag(goldenflags, FLAGS_OF));
   }
+  if (y >= w) {
+    *flags = SetFlag(*flags, FLAGS_CF, GetFlag(goldenflags, FLAGS_CF));
+  }
 }
 
 TEST(bsu, test) {
diff --git a/tool/net/redbean.c b/tool/net/redbean.c
index 8ee14763f..2b33d50bf 100644
--- a/tool/net/redbean.c
+++ b/tool/net/redbean.c
@@ -7093,7 +7093,7 @@ void RedBean(int argc, char *argv[]) {
   isinitialized = true;
   CallSimpleHookIfDefined("OnServerStart");
 #ifdef STATIC
-  EventLoop();
+  EventLoop(-1, HEARTBEAT);
 #else
   if (!IsWindows() && isatty(0)) {
     ReplEventLoop();